Heat-generator.



No. 793,219. PATENTED JUNE 27, 1905. J. G. OKBLLY.

HEAT GENERATOR.

APPLIGATION FILED MAn.2a.19o3.

Patented June 27, 190.5.

UNITED STATES PATENT OFFICE.

JOSEPH Gr. OKELLY, OF CHICAGO, lLLlNOIS.

HEAT-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 793,219, dated June 27, 1905.

Application filed March 23, 1903. Serial No. 149,133.

To all 'l1/7mm, it 71mg/ concern:

Beit known that I, JOSEPH G. OKELLY, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Isleat-Generators, of which the following is a full, clear, and exact description.

The object of my invention is to provide a heat-generator, and particularly stoves for domestic uses which can use either hard or soft coal and burn both the solid as well as the gaseous elements of the same and dispose of the heat products produced by their consumption in such manner that the heat will directly affect the exterior walls of the stove while ein route to the chimney and assist in the generation of gases from the unconsumed fuel supplied to the stove. This l accomplish by the means hereinafter fully described, and as particularlyT pointed out in the claims.

In the drawings, Figure 1 is a vertical central section taken through a stove embodying my invention. Fig. '2 is a horizontal section taken on dotted line 2 2, Fig. l, looking in the direction indicated by the arrows.

Referring to the drawings, A represents the base of a heating-stove which is supported on suitable legs and in turn supports the side walls a of the lower chamber of the stove. The ash-pit of the stove .is partitioned off within these side walls a by the vertical wall b, and access is had to such ash- .it by a suitable hinged or sliding door B. The top of the lower chamber is covered by a transverse plate c, and the area of the ashpit is such that the lower end of the centrally-located Vlire-pot C and the grates D enter the same as shown. The space inclosed between the side walls a and the walls of the ash-pit form an air-chamber (Z, into which access is had through a door c, which has a slide-valve therein for regulating the supply of air into said chamber according as desired.

Resting on and arising from the diaphragm or plate c, just outside of and concentric with the lire-pot, is a circular wall E, whose upper edge terminates in the same horizontal plane as said fire-pot. The outward inclination of this wall E is not quite so great as that ol' the lire-pot, and consequently the base of the same is farther from the firepot than the upper edge thereof. The diaphragm or plate c between the base of wall E and the diaphragm is cut away from a point immediately next the wall of the ash-pit on one side clear around the outside of said ashpit to the opposite side wall thereof to form an air-inlet j' of such capacity that the air will, when the stove is in operation, till the space between said lire-pot and wall E and discharge evenly up from between the upper edges thereof all the way around.

Located preferably equidistant from the axial center of the lire-pot and from each other a suitable distance outside of wall E are the standards g g. These are suitably secured to and arise `from diaphragm c and have resting on their upper ends the lower edge of the lower section F of a circular magazine. The upper edge of this lower section is rabbeted or bell-shaped and has seated therein the upper section G of the magazine, and the upper end of this upper section is preferably reduced in diameter and extends to and through the top zy of the stove, where it is closed by a suitably removable cover H.

Between the top of the stove and the diaphragm and supported by the latter is the outer cylinder l, which is greater in diameter than and surrounds and incloses the maga-- zine in such manner as to leave an amnilar chamber J around said magazine extending `from the diaphragm to the top of the stove.

At a point just above the upper edges of the lire-pot and wall E the lower section of the magazine is provided with an annulus K, which is secured to its inner surface. The inner circumference of this annulus corresponds to that of the circumference of the inner side of the upper edge of the lire -pot, and it has its upper and lower edges beveled, the latter at a greater angle than the former, to provide a slanting roof /r over the spaces between the upper edge of the fire-pot and wall E and between the latter and the lower section of the magazine, so as to provide for a IOO dotted line in.

restricted passage at the point where the gases and products of combustion from the fire-pot and magazine will as they escape therefrom thoroughly commingle with the heated air issuing and discharging upward from between the iire-pot and wall E.

The operation of my invention is as follows A iire being built in the fire-pot, to which access from the outside of the stove is had through a door M, opening into the magazine as shown, the draft through the door e of the air-chamber d is closed and that through the door B is opened. In order to assist in getting the fire started, a damper N in the shoulders of the section of the magazine can be opened 5 but when the iire is well started this damper is closed and the draft through door B is closed or regulated, so that but very little air passes therethrough. The draft through door e is then opened and the air from chamber d passes up between the fire-pot and wall e and passes between and out at the upper edges thereof and commingles with the gases generated by the iire in the fire-pot and together therewith passes down between wall E and the lower section of the magazine and under the lower edges thereof and then up between the outer casing of the stove and the magazine. The heat adjacent to the upper edges of the iire-pot and wall'E is sufiicient to produce combustion, and this combustion continues from this point down under the lower edge of the lower section of the magazine and upward until the gases of combustion have been consumed.

Ahopper O7 of lire-brick or other suitable material, may, if desired, be seated against the upper beveled surface of the annulus, and when supplying fuel to the stove I prefer to pile the same up as far as the upper (Shown in Fig. l of the drawings.) The heat derived from the sides of the magazine is sufiicient to coke this fuel and liberate a large per cent. of the gas therefrom, and this gas escapes and burns the same as the gas from the bed of fuel in the fire-pot, which will during the operation of the stove get more or less candescent up as far as the dotted line y. (Shown in Fig. l.) The operation of my invention thoroughly consumes the particles of carbon thrown off by the burning fuel and likewise consumes the products of combustion so thoroughly as to destroy the smoke.

The principal feature of my invention is the extraction of the gas from the stove at a point below the upper surface of the body of fuel in the combustion-chamber 'and the burning of the gas so generated by supplying thereto and commingling therewith air in a more or less heated condition; and it also consists in the utilizing of the heat so produced-namely, by the combustion of these gases to heat the exterior of the stove. In thenaccomplishment of these objects I do not wish to be confined to the exact construction of the exterior of the stove or the shape of the magazine or the shape of other elements or parts of the invention as hereinbefore described, because these may be changed or in some instances omitted without departing from the spirit of my invention. v

/Vhat I claina as new is" 1. A heat-generator comprising a fire-pot, a surrounding concentric wall separated from and about the same height as said firepot, a suitable supporting-plate therefor having openings therein between the base of said wall and said fire-pot, a magazine surrounding said wall the lower edge of which terminates a suitable distance above said supporting-plate, an annulus secured to the inner circumference of said magazine having its upper and lower edges beveled interiorly and overhanging said fire-pot and surrounding wall, and an outer shell or Casing closed at its top and provided Witha chimney-opening.

2. A heat-generator comprising a fire-pot, a surrounding concentric wall separated from and about the same height as said firepot, a suitable supporting-plate therefor having openings therein-between the base of said wall and said re-pot, a magazine surrounding said wall the top of which is normally closed and the lower edge of Which termil nates a suitable distance above said supporting-plate, an annulus secured to the inner circumference of said magazine having its upper and lower edges beveled interiorly and overhanging said iire-pot and surrounding wall, and an outer shell or casing closed at its top and provided with a chimney-opening.

3. A heat-generator comprising a basal chamber divided into. an ash-pit and an independent air-chamber, a fire-pot the lower grated end of which extends into said ashpit, a transverse plate or diaphragm covering said ash-pit and air-chamber, a wall surrounding said fire-pot the base of which is farther removed from said fire-pot at its base than at its upper edge which is supported by said diaphragm, which latter has openings therein connecting said air-chamber with the space between said nre-pot and wall, a magazine surrounding said wall the lower edge of f which is suitably supported above said diaphragm, an annulus secured to the inner circumference of said magazine the upper and lower edges of which are interiorly beveled and which overhangs the outer edge of said iire-pot, and a suitable exterior shell or case for said generator.

4. A heat-generator comprising a basal chamber divided into an ash-pit and an independent air-chamber, a fire-pot the lower grated end of which extends into said ash.-`

pit, a transverse plate or diaphragm covering said ash-pit and air-chamber, a wal-l surrounding said fire-pot the base of which is farther removed from said fire-pot at its base IIO Io lower edges of which are interiorly beveled and which overhangs the outer edge of said lire-pot, and L suitable exterior shell or case for seid heat-generator.

In testimony whereotl I have set my hand this 17th day ol" March, 1903.

JOSEPH G. OKELLY.

l/Vitnesses E. K. LUNDY, F C. BARRY. 

